Roll stand for flying splices



p 1953 J. P. VAN DUSEN v 2,651,474

' ROLL STAND FOR FLYING SPLICES Filed Aug. 14, 1952 2 Sheets-Sheet 1INVENTOR JAMES P. VAN DUSEN Bar /{y ATTORNEY Sept. 8, 1953 J. P. VANDUSEN 2,

ROLL STAND FOR FLYING SPLICES Filed Aug. 14, 1952 2 Sheets-Sheet 2 I NVENTOR JAMES F." VAN DUSE N ATTORNEY Patented Sept. 8, 1953 UNITEDSTATES T James P. Van Dusen, Richmond, Va. Application August 14, 1952,Serial No. 304,248

' erally in use in bag factoriesto the performance of the improvedmethod.

The above and other objects will be made clear from the followingdetailed description taken in connection with the annexed drawings,

in which:

Figure 1 is a side elevation view;

Figure 2 is a partial front elevation view of the improved apparatus;and

Figure 3 is a view similar'to Figure 1 showing a modification of thestructure of the lower I right hand corner of Figure 1.

As noted in. my co'pending application aforesaid, heretofore when aflying splice has been attempted either on a bag machine or a printingpress, it has been considered necessary to effect a bodily movementeither of the exhausted roll or of the replenishing roll. The presentinvention contemplates fixed bearings in which either of two rolls mayact as the replenishing roll.

Referring to the drawings, there is shown a side frame member [0, one ofsuch members being provided on each side. At the top of the frame thereis a notch l2 and adjacent the bottom of the frame a notch l4. The uppernotch I2 is adapted to receive a shaft IS on which is centered a roll ofpaper l8. The notch I4 is adapted to receive the shaft of another rollof paper 22.

Keyed to the upper shaft [6 is a pinion 24 which meshes with a gear 26mounted on a shaft 28. A brake drum 30 is similarly keyed to the shaft28 and is contacted by a brake shoe 32 influenced on one side by a rod34 and on the other side by a rod 36.

A pinion 38 is keyed to the lower shaft 20 and meshes with a gear 40keyed to a shaft 42. A brake drum 44 is keyed to the shaft 42 and hasbearing on a brake shoe 46. The brake shoe 46 is controlled on one sideby a rod 48 and on the other side by a rod 50, the rods 48 and 50 beingcrossed. The rod 48 runs from the lower brake shoe 46 to a member 52 inwhich it is secured by adjustable nuts 54. The rod 34 runs from theupper brake shoe 32 to the opposite end of the member 52 where it issecured by adjustable nuts 56. The member 52 is mounted on an eccentric58 on a shaft 60. The shaft 60 and the 5 Claims. (Cl. 242- 75) athirdguide roll 96.

p 94 he substantially in the same horizontal plane. 'I'he axis of theroll 96 is parallel to the axes of eccentric 58 may be rotated by meansof a handle 62. In the position illustrated in Figure 2 the member 52 isin its lowermost position, relieving tension on the lower brake shoe 46and applying tension to the upp r brake shoe 32.

The rod 50 connects the opposite side of the lower brake shoe 46 to onearm 64 of a bell crank 66 mounted on a shaft 68. A rod 36 connects oneend of the upper brake shoe 32 to the opposite arm 10 of the bell crank66.

Bell crank 66 is keyed to the shaft 68 and spaced pairs of elongatedarms 12 are similarly keyed to the shaft 68 and at their opposite endscarry a dancing roll 14. A pair of arms '16 are rotatably mounted on theshaft 18 of the dancing roll 14. The arms 16 pass through members whichhave rollers 82 bearing on one side of the arm 16 and a roller 84bearing on the opposite side. mounted for free oscillation on a shaft 86on which is also mounted a guide roll 88.

Let us assume that a web 90 is being drawn from the upper roll l8. Itpasses over a guide roll 92, thence over a second guide roll 94 and Theaxes of rolls 92 and rollsv 32 and 94 but lies in a lower horizontalplane. The web 90 then passes upwardly over a fixed guide roll 98journaled in the frame I0, thence over the dancing roll 14 and thenceover a guide roll [02 mounted on the shaft 86. Any change in tension inthe web 90 will raise or lower the dancing roll 14 and thus will rock inone direction or another the bell crank 16 and as the tension increasesand the dancing roll moves upwardly it will lift the rod 36 and re lievetension on the brake band 32. Conceivably if the tension decreases thedancing roll 14 will drop, rock the bell crank 66 clockwise and thusthrough the rod 36 increases the tension in the brake band 32.

If the handle 62 be rotated to its lower position the brake band 32 willbe disabled and the rocking of bell crank 66 will then throughout therod 50 adjust the tension of the brake band 46 to maintain substantiallyconstant tension in the web 90.

Assume now that the roll [8 is approaching exhaustion: a fresh roll 22is placed with its shaft 20 in the lower slot 14 of the frame I0 and acertain amount of slack (from one to three feet) is run off as a web H0.The leading end of the web H0 is coated with adhesive and is fed over ametal feed'guide H2 adjacent the The members 88 areguide roll 92. Afterit is fed over the guide H2 it comes in contact with the trailing end ofthe web 90. The rolls 92, 94 and 96 form a sort of snubber whichprevents sliding of one Web on the other. As the web H makes contactwith the web 90, the operator with a knife, or other tool, cuts the web90 adjacent the upper roll 13 and throws the handle 62 to its oppositeposition to disable the brake band 32 and to place thebrake'ban'dflfiinoperation asza tensiongoverning means.

Similarly when the lower roll 22 approaches exhaustion a fresh roll I8is placed with its shaft in the upper notch l2. A similaramomitiof slackis generated in the Web 9% and the left side of its leading edge isdobbed withadhesive. This leading end is then fed between: .the--webl.-li0 and the guide roll 92, at which time the web H0 is severed andthe handle 82 again reversed.

The organization just described applies to a on'e iily bag.fiiioweveniitjs querfectlyapessihlerto nil-tee in tandemrelat-ionship:as imanyiirames i l 0 may be desired- :to handleltwo,threerorzmore alphes.

Frames such as -l 0 are very' commonithroughout th'e bagmaking industry,Pier which 513132.301). pray the most -minorl alterationsaremecessarylztc ensible a fiyin'g splice to be mademmeaiisting bag""mahines in epcordance with this inve'ntinn.

No partieular timing i's required .to generate-the necessary-slack i the repleriishing web and to app-1 th'e #adhe'sive. Fhe operatori mustShave reasenablyagood timingrin theisevering of theiex- -nauste21web--:an in reversa1 :zc'f ithe handleifit. @his? howeverfilias prevedto be -operation easily defined-and mastered.

ln some cases where' the wbs to be spliced' are srret-"e'nly highlyimpervious but also very slick in miish,=e.g.,-'=moi'sture proofcellophaneit may be admissible toresort to-the expedient shown 'inFigure 3. *Here aroll lfiifl is journaledgenerally above the roll- Q2 inan extension I l-- of the frame -1-6. A secondrll l 32 is mounted i heeiitensi'on H generallyahove theroll fifi. r'i lafelt 1'34 runsfromthe-roll fl overthe ro'll ifl where it'uriderlies thewebor webs'b'eing spliced. It-then passes upwardly and cver th-e intermediate 1 61194 5 where it overlies the web. Ihence itpasses downwardly '5 and'arourid-ithe roll 9 dwhere it -ufidei'lies the -w'eb.

It then passes upwardly over the roll 32 and back to the roll l3,

At the lower left side of Figure 1 there are shown guide rolls I M and lI6 vertically separated with their axes parallel. At the right hand endof Figure 1 are shown guide rolls I I8 and 12!) similarly verticallyspaced with their axes parallel. These provide for flexibility of themachine which may be placed, for example, between a printing press andtabagmachine. "Ther'dotte'dilines and arrows indicate the various routesby which the webs can be threaded.

I claim:

roll-stand comprising: a pair of spaced frame members, each of saidframe members "having-vertically spaced notches to receive the '7shafticf :a-supplyroll, one of said members having Lil iii)

a brake drum journaled adjacent each of said notchesfeach of said brakedrums having means to engage the shaft of-a supply roll to be rotatedtherbypa bra -lie shoe for engagement with each plurality orjuxtaposedjguide' rolls'having'their axes below and laterallyremovedfrorntheaxes of "said brakedrums.

'4. A"roll"stand"as set'forth in claim .3 including a" guide'p'late"'leading to'the' first .o'f saidguide rolls.

"5. ATOll'fStELIld assetiforth' in claimi l including means to limittheoscillationof said lever.

"JAMESPIVAN DUSEN.

"No references cited.

